Intrinsic Safety

FM Approved intrinsically safe equipment is constructed such that the electrical energy within the apparatus and of interconnecting wiring exposed to the explosive gas atmosphere is restricted to a level below that which can cause ignition by either sparking or heating effects.

This protection method addresses operation under both normal and abnormal circuit conditions such that spark or thermal effects produced normally or in fault conditions will not cause ignition of a flammable or combustible material in air.

Equipment certified using this protection method is suitable for use in Class I, II, III Division 1 and Class I, Zones 0, 1 and 2 and Zones 20, 21 and 22.